L4X3RP

Triacs Overview

The L4X3RP is a bidirectional triac manufactured by Littelfuse, designed for AC power control applications. It features an RMS on-state current of 300 mA and a rated repetitive off-state voltage (VDRM) of 400 V. The device operates within a temperature range of -65°C to +110°C and is housed in a TO-92 through-hole package. Key electrical characteristics include a gate trigger current (Igt) of 3 mA, a holding current (Ih) maximum of 5 mA, and an on-state voltage of 1.6 V. It supports non-repetitive on-state currents of 8.3 A and 10 A, with a leakage current of 2 µA at VDRM.

Triacs Feature Summary

• Bidirectional switching capability for AC circuit control
• Sensitive gate triggering for low-power drive compatibility
• Robust thermal performance across extended industrial temperature ranges

Triacs Applications

• Lighting dimmer circuits
• Small motor speed control systems
• AC power switching modules

Triacs Procurement Notes

Verify the specific Littelfuse datasheet for the L4X3RP to confirm RoHS compliance status and REACH SVHC declarations before integration. Ensure that the ordering suffix matches the required packaging format, as reel quantities may differ from standard tube distributions. Cross-reference the manufacturer's official documentation to validate the exact pinout configuration for the TO-92 package variant supplied.

Triacs Selection Notes

Select this component when a compact triac with 400 V blocking voltage and 300 mA continuous current handling is required. The sensitive gate specification allows for direct interfacing with microcontrollers or logic gates without additional amplification stages. Consider the TO-92 package constraints for thermal dissipation in high-duty cycle applications compared to larger surface-mount alternatives.

Triacs Part Context

The L4X3RP belongs to the LxX8Ex series of thyristors from Littelfuse, which are engineered for general-purpose AC power control. This series provides reliable switching for consumer electronics and industrial equipment. The part number indicates a 300 mA current rating and 400 V voltage class within the broader family of bidirectional triacs offered by the manufacturer.

Triacs Replacement Considerations

Consult Littelfuse official substitution guides for equivalent triacs with matching 300 mA/400 V ratings. Verify pinout compatibility for TO-92 packages when replacing with components from other manufacturers such as STMicroelectronics or Vishay.